| From: | "Joel Jacobson" <joel(at)compiler(dot)org> |
|---|---|
| To: | "Daniel Verite" <daniel(at)manitou-mail(dot)org>, Darafei Komяpa Praliaskouski <me(at)komzpa(dot)net> |
| Cc: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, "Isaac Morland" <isaac(dot)morland(at)gmail(dot)com>, "Chapman Flack" <chap(at)anastigmatix(dot)net>, "PostgreSQL Hackers" <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: COPY table_name (single_column) FROM 'unknown.txt' DELIMITER E'\n' |
| Date: | 2021-05-10 06:12:47 |
| Message-ID: | 0e451c85-ce2c-4197-91aa-5eecd4f0d3e9@www.fastmail.com |
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| Lists: | pgsql-hackers |
What about:
COPY ... FROM ... WITH PATTERN 'regexp_pattern'
Where the columns would be matched with the capture groups.
This could handle the quite common case of varying white-space as column separators:
COPY log (col1, col2, col3) FROM 'log.txt' WITH PATTERN '^(\S+)\s+(\S+)\s+(\S+)$'
This could also handle $SUBJECT:
COPY table_name (single_column) FROM 'unknown.txt' WITH PATTERN '^(.*)$';
And lots of other more complex use-cases.
/Joel
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